At least on linux, a Plex server will likely use little ram (8 gig being a lot for it), so 32 is certain to be way more than enough.I have a 4790K with 32GB of RAM. Would that CPU work well with Plex and streaming, transcoding, etc?
That because you are setuped in a scenario where you never go from 4K HDR source to client that need the server to transcode, there is absolutely no limit to the power a Plex server can require (imagine someone that have 10-20 person logged on it at the same time with a very different array of players that have many transcoding going, not just streaming). People that got Quadro card and bought a plex pass for their plex server didn't necessarily do it because they didn't know what they were doing, just a different use case than yoursWe've been running a PLEX server on a laptop with a N3100 series quad core not even an i3 for the last few years and it's been just fine. If you have something slightly better that would be great but you don't need much. I'm retiring my i7 4770K which is what 10X+ faster than the mobile celeron? I've noticed over the last 10-15 years people don't know wtf they are talking about when it comes to required performance required for home HTPC/Media playback. Unless it's going to be a gaming rig as well you can get away with next to nothing which is great for preventing more ewaste.